Clamping device.



PATEETED FEB. 25, 1908. H. H. MOGIFFIN & E. H. MOUAULEY.

GLAMPING DEVICE.

APPLICATION FILED JUNE 26,1907.

' Affomey erence being had therein to the accom'pany- UNITED STATESPATENT OFFICE.

HENRY H. McGIFFlN AND EDWARD H. McC-AULEY, OF PITTSBURG. PENNSYLVANIA,ASSIGN- ORS OF ONE-THIRD 'TO JAMES P. BRENXAX, OF BRADDOCK.PENNSYLVANIA, AND ONE- THIRD TO W. L. ELFORD AND ONE-THIRD TO SAIDMCGIFFIN, OF PITTSBURG. PENNSYL- VANIA.

CLAM'PING DEVICE.

Specification of Letters Patent.

Patented Feb. 26, 1908.

Application filed June 26. 1907. Serial No. 380.924.

T all whom it may concern: I

Be it known that we, HENRY H. MCGIF- the United States, residing atPittsburg, county of Allegheny, and State of Pennsylvania,. haveinvented certain new and useful Im rovements in Clamping Devices, ofwhich t 1e following is a specification, refing drawing.

'Tlns invention relates to a'clamplng de- Y vice, and particularly to sring actuated plates adapted to embrace te escoping members and retainsaid members in their relative position while permitting an adjustmentthereof.

, The invention has for an object to provide clam-ping plates aperturedto receive telescoping members, and normally held in clamped relation bythe elasticity of said plat'es, while the parts are adapted to be drawntogether to release the telescoping membersby a connecting screw whichalso prevents any accidental movement of said plates toward each other.

Other and further objects and advantages of the invention will behereinafter set forth and the novel featuresthereof defined by the apended claims.

In t e drawing; Figure 1 is a side elevation of the invention showingits application to the Wind guard of an automobile; Fig. 2 is a verticalsection; Fig. 3 is a detail perspective of the clamp removed from thetelescoping members, and Fig. 4 is a modified form of the clamp.

Like numerals refer to like parts in the several views of the drawing.

This invention is adapted for application to any construction orarrangement of telescoping members, but particularly in connection witha folding wlnd guard, as shown in Fig. 1 to which it is especiallyadapted. In this ap lication of the invention the numeral 1 esignatesthe wind guard which is the usual glass plate ivote'd or hinged at 2 tothe front of the dasff board 3 of an automobile, and is adapted to befolded downnected to the guard by means of the knuckle joint 6, and thelatter to the forward portion FIN and EDWARD H. McCArLEr, citizens of 57 of the machine by means of a similar joint 8 pivotally connected withthe bracket 9 located upon the portion 7. The clamping is effected bymeans of the plates 10 and 11 each of which is provided with the aerture 12 of slightly greater diameter than tie portion to be gripped sothat when said plates are drawn at an angle other than a right angle tothe telescoping members the edges of the a ertures 12 bite against saidmembers and secure a firm grip thereon which prevents any slipping ofthe adjustment. These plates 10 and 11 may be connected by forces thesame outward away from each other, as shown in 2, this spring beingconnected to the plates by means of the screws. .14 where founddesirable. The plates are adapted to be held in their gripping positionand to be released therefrom when desired by means of the bolt 15 whichis swiveled in one of the plates by means of the head 16 and collar 17at oppositcsides thereof, and has its opposite end 18 threaded into theother plate. The bolt is also provided with the knurled hand hold 19provided with the tool sockets 20 to assist in its adjustment andoperation.

In the modified form of the invention shown in Fig. 4, the-U-shapedspring member 21 is used, the 0p osite ends 22 thereof being equivalentto tie plates 10 and 11, and connected by the bow 23 by which they arenormally separated from each other.

connected to-the free ends 24 of this spring,

similar manner to that hereinbefore described.

' In the operation of the invention it will be seen that the spring ofthe gripping plates and into biting contact with the telescoping memberswhich are connected to the wind guard and frame of the machinerespectively so that the guard is retained in an upri ht position. underthefriotional gripping which allows the necessary vibration to preventthe breakage of the glass in rough traveling or the cutting of thethreads of the holding brace if The adjusting bolt 15, shown in Fig. 2,is

means of the spring 13 which normally as shown in Fig; 2 and actsthereon in a normally forces them away from each other bers, oppositelydisposed aperturecl plates folded down above the radiator at the frontof the machine, as shown by dotted linesin Fig. 1, thus presenting asimple and efficient construction by which the telescopin members may bereadily held in adjuste position and quickly released when desired. Thespring of the grip ing plates causes them to bite upon the te escopmgmembers, and the bolt extending between these plates prevents anyaccidental compression thereof and consequent releasing which mightallow a slipping of the telescoping members under the vibrations of themachine, while the operation of this bolt draws the gripping plates intoparallelism thus releasing the bite upon the telescoping members andpermitting a freemovement thereof relative to each other for theadjustment of the wind guard or its folding as above described.

Having described my invention and set forth its merits, what 1 claim anddesire to secure by Letters Patent is 1. In a brace forwind guards,telescoping members, a clamping device mounted on said members andcomprising opposite gripping plates connected by a spring portion tonormally dispose them out of parallelism, and a connecting boltextending through the free ends of said plates and having a threaded endmountedin one late for bringing them into parallelism to re ease thegrip thereof.

2. A clamping device comprising opposite gripping plates normally heldout of parallelism by a connecting sprin portion, and a bolt pivoted inone of said p ates and threaded into the other plate for drawing saidplates into parallelism.

V 3. In a gripping device, telescoping memsurrounding each of saidmembers, means for normally holding said plates in gripping contact, abolt swiveled at its head in one of said plates and having its oppositeend threaded into the opposite plate, and an operating device carried bysaid bolt between sald plates.

4. Ina device of the class described,'the combination .with thepivotally mounted wind guard of an automobile, of telescoping membersconnecting said uard to the base of the machine, clamping platesconnected to each other at one end by a sprin portion and each embracingoneof said te esco ing members, and means mounted in the p ates forad'usting said plates toward and from each other.

5. In a device-0f the class described, the combination with the-pivotally mounted Wind guard of anautomobile, of telescoping membersconnecting said uard to the base of the machine, clamping p atesconnectedto each other at one end by a spring portion and embracing saidtelescoping members, a

connecting bolt mounted in the free ends of the plates for adjustingsaid plates toward and from each other, a pivotal connection between oneof said telescoping members and the wind guard, and a pivoted connectionbetween the opposite member and the base of the machine.

6. A clamping device comprising a U- shaped spring body to normallysupport its apertured free ends to grip opposite telescoping members,and an adjusting bolt extending between said free ends to retain them inadjusted position and release the same.

. 7. In a clamping device, a U-shaped spring body having apertured freeends to receive telescoping members, and means connecting andmountedupon said free ends for holding or adjusting the same toward and fromeach 4 other.

In testimony whereof we aflix our signatures in presence of twowitnesses.

HENRY H. McGIFFIN. EDWARD H. MGCAULEY. Witnesses as to Henry H.McGiflin:

DAvID M. JONES, HENRY F. I-IoFFMAN. Witnesses as to Edward H. McCauley:

JOHN L; FLETCHER, ALFRED T. GAGE.

